I am so sorry to hear this sad news Barbara, I know exactly what it is like for the Love of your Life to contract Dementia. My darling wife was diagnosed with a form of Alzheimer's about seven years ago, I nursed her at home until she passed away in August last year. Until she drew her last breath, as I told her I had loved her since I was seven years old !
That I was able to do so, to nurse her at home, and was assured it was the very best thing for her, was a comfort and a rare blessing for people in our situation. I was also lucky that her memory was not badly affected, short term yes, but she never lost her long term memory, again because she had a rare form of the disease.
She had difficulty in constructing a sentence quite often during her last year, but was always able to make me understand what she needed, and was trying to say.
Please convey to your lovely Joe our thanks for the work he did along with you for all that time.
Please make sure you get all the support you need in the future, that is important for you.
Love, Hugs and Thanks to you and Joe.